For adult patient, wall suction pressure and portable suction pressure should maintain as?

Appeared in: NORCET-7 Mains-2024

Explanation

The standard negative pressure range for wall suction in adults is 100-150 mmHg, which effectively clears secretions while minimizing tissue trauma.
Pressures above 150 mmHg increase the risk of complications like hypoxia, mucosal bleeding, and edema.
While the portable suction value of 10-15 cm H2O is very low (approx. 7-11 mmHg), this option is the only one that provides the correct and safe range for wall suction.
Note: Many clinical sources cite the portable suction range as 10-15 cmHg, which is equivalent to 100-150 mmHg, suggesting a likely typo in the question's units.

Option B: The wall suction pressure of 150-200 mmHg is dangerously high for routine suctioning and can cause significant tracheal mucosal trauma and hypoxemia.
Option C: A wall suction pressure of 200-250 mmHg is excessive and harmful. It would likely cause severe tissue damage, bleeding, and profound hypoxemia.
Option D: The wall suction pressure of 80-100 mmHg is the recommended range for infants and children, not adults. It may be insufficient to clear thick secretions in an adult patient.

Clinical Relevance

Nursing practice connection: Use the key finding related to Airway Suction Pressure Guidelines to guide bedside assessment, documentation, and the next nursing action.
Using the correct suction pressure is a critical nursing responsibility to ensure patient safety and prevent iatrogenic injury during a common procedure.
Complications from improper suction pressure include hypoxemia, atelectasis, mucosal trauma, bleeding, and increased infection risk.
Always check the suction gauge by occluding the tubing before starting the procedure to ensure the pressure is set correctly.

How to Approach the Question

First, identify the key parameters in the question: the patient population ('adult') and the procedures ('wall suction', 'portable suction').
Recall the standard safe suction pressure ranges for an adult. The most critical value to remember is the wall suction range, which should not exceed 150 mmHg.
Evaluate each option against this standard. Eliminate options with dangerously high pressures (Options B and C) and pressures that are too low for an adult (Option D).
Select the option that provides the correct wall suction range (100-150 mmHg). This makes it the 'most correct' choice, even if other parts of the option seem inconsistent due to likely typos in units.

Concept Tested & Keywords

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E6 Nursing Fundamentals Taylor pp. 760-762, 745-747

Practise the full NORCET-7 Mains-2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.